CDC nurse Joy Oshiro is stressed to the breaking point. College students are dying and no one knows why. And her new partner Dr. Gunner Anderson is frustratingly annoying—and sexy, but mainly just plain annoying—and proving difficult to avoid. He spent three years with Doctors Without Borders, and disillusioned is just the tip of his issues.

They'll need to learn to trust each other if they have a chance at figuring out who is behind the attacks. She makes him laugh, makes him forget—for a little while. But each new clue keeps them one step behind the terrorists, with buildings and evidence being destroyed just as they near.

Now they're in a race against time to not only find a cure, but also to avoid becoming the next targets themselves.

Contains mature themes.